Question about Insignia NS- 27" TV27 TV

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Wierdness with the TV

If it is plugged in at all, it turns off and on by itself every 3 seconds, tried different jacks, de-batteried the remote just in case, checked to see if the on/off button was stuck. nothing. I dont have the $ to buy a new tv, so I am hoping to avoid chucking it in the garbage, can you help?

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OK - the bad news - like most electronic gadgets these days your TV when plugged in sits in a state where its using electricity waiting for you to push the remote button such that it can jump into life.

This means that there is a circuit in the TV that specifically energises when you push the remote on button and that kicks in a transistor to energise a relay that turns on the juice to get the TV going. Sounds like there is something in that energising circuit that has broken down, perhaps a resistor that is not a resistive as it used to be or a capacitor that is leaky and as a result the circuit is performing the signal to turn the relay on and loosing the capacity to keep the main power relay energised and then the relay is turning off, until the capacitor recharges and it is re energising the main power relay again.

The problem here is that there is no way that you are going to find that faulty component on your own without a wiring diagram, and oscilloscope and a knowledge of electronic design.

You could look up in the yellow pages TV repair and talk to some one over the phone to get an understanding of what may be the problem and a guideline on what they think it may cost to repair. It shouldn't be too much but if they give you the story of lots of dollars you could ask how much to just solder the relay such that the TV comes on straight away when you plug it in rather than having to use the push button or remote to turn it on.
It by passes that circuit - its a little more harsh on the electrics and it means you have to plug and unplug the set to turn it off and on but its an option if you can't afford a new one.

Sorry I can't be more helpful. Good Luck

Posted on Aug 14, 2008

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